Method for attaching display panel and method for manufacturing display apparatus

ABSTRACT

A method for attaching display panel comprises: preparing a frame-shaped body comprising a first rod-like member and two second rod-like members, the two second rod-like members being substantially parallel to each other and crossing the first rod-like member; bonding the first rod-like member and the two second rod-like members to a given plane surface or a given curved surface; and moving a display panel having a width to be supported between the two second rod-like members from one of the ends of two second rod-like members towards the first rod-like member along a first surface of the two second rod-like members and a second surface of the two second rod-like members, the first surface and the second surface facing each other.

CROSS-REFERENCE TO RELATED APPLICATIONS

This patent application is a divisional of U.S. patent application Ser.No. 15/779,813, having a filing/§ 371(c) date of Dec. 13, 2018, which isa U.S. National Stage of International Application No.PCT/JP2017/040311, filed on Nov. 8, 2017 (pending). The entiredisclosure of each patent application that is set forth in thisCross-Reference to Related Applications section is hereby incorporatedby reference.

TECHNICAL FIELD

The present invention relates to a method for attaching a display paneland a method for manufacturing a display apparatus.

BACKGROUND

In recent years, with a request for thinning relative to liquid crystaldisplay apparatus and organic EL display apparatus or the like and anexpansion of use for these flat display apparatuses, the spread of thinand preferably flexible display panels has been accelerated. In manycases, thin display panel is used in a state in which the display panelis bonded to an arbitrary supporting member in order to obtain a shaperetaining property or a mechanical strength, or according to a specificcircumstance in each situation of use. For example, in Patent Document1, there is disclosed a method for bonding an image display panel suchas a liquid crystal display panel with a window glass used for digitalsignage. In the method disclosed in Patent Document 1, an image displaypanel disposed to be spaced from a window glass via an elastic member orthe like is pressed towards the window glass while being elasticallydeformed by rolling of a roller from one end to the other end of theimage display panel. Consequently, the image display panel and thewindow glass are bonded with each other via a layer including aphotocurable resin.

PRIOR ART DOCUMENT Patent Document

-   Patent Document 1: JP 2016-97650 A

SUMMARY OF THE INVENTION Problem to be Solved by the Invention

It is very difficult to detach, from a supporting member, a displaypanel which is bonded to the supporting member by using an adhesivecomposed of a photocurable resin or a thermosetting resin or the like asin Patent Document 1. Even if the display panel could be detached,debris of the adhesive or remains of the display panel or the supportingmember are left on each bonding surface and thus the display panel orthe supporting member cannot be easily reused. Therefore, even in a casewhere a defect merely occurs with one of the display panel and thesupporting member, it may be needed to discard or replace both of thedisplay panel and the supporting member. It is also difficult toaccurately bond the display panel at a predetermined position when thedisplay panel is bonded to the supporting member. In addition, there isa risk that a breakage of the display panel occurs if movement orrearrangement of the display panel is repeated to position in a properposition, the display panel temporarily disposed in an inappropriateposition.

Accordingly, an object of the present invention is to provide a methodfor attaching a display panel and a method for manufacturing a displayapparatus in which the display panel can be easily attached at apredetermined position on a given plane surface or a given curvedsurface and thereafter the display panel can be easily detached asrequired from the surface on which the display panel has been attached.

Means to Solve the Problem

A method for attaching display panel according to an embodiment of thepresent invention is characterized by comprising: preparing aframe-shaped body comprising a first rod-like member and two secondrod-like members, the two second rod-like members being substantiallyparallel to each other and crossing the first rod-like member; bondingthe first rod-like member and the two second rod-like members to a givenplane surface or a given curved surface; and moving a display panelhaving a width to be supported between the two second rod-like membersfrom one of the ends of two second rod-like members towards the firstrod-like member along a first surface of the two second rod-like membersand a second surface of the two second rod-like members, the firstsurface and the second surface facing each other.

A method for manufacturing display apparatus according to anotherembodiment of the present invention is characterized by comprising:preparing a frame-shaped body comprising a first rod-like member and twosecond rod-like members, the two second rod-like members being parallelto each other and crossing the first rod-like member; bonding the firstrod-like member and the two second rod-like members to a given planesurface or a given curved surface; forming a display panel having awidth to be supported between the two second rod-like members; andattaching the display panel to the given plane surface or given curvedsurface, wherein attaching the display panel to the given plane surfaceor given curved surface comprising: moving the display panel from one ofthe ends of two second rod-like members towards the first rod-likemember along a first surface of the two second rod-like members and asecond surface of the two second rod-like members, the first surface andthe second surface facing each other.

EFFECTS OF THE INVENTION

According to the embodiments of the present invention, it is possible toeasily attach a display panel at a proper position on a given planesurface or a given curved surface, and thereafter, it is possible toeasily detach the display panel as required from the surface on whichthe display panel has been attached. It is also possible to obtain adisplay apparatus in which a display panel can be easily detached from agiven plane surface or a given curved surface.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 schematically shows a method for attaching display panelaccording to Embodiment 1 of the present invention and a part of amethod for manufacturing display apparatus according to anotherembodiment of the present invention.

FIG. 2A shows a front view of an example of a display panel attached toan attaching target surface by using the method for attaching displaypanel according to Embodiment 1.

FIG. 2B shows a cross-sectional view along a line IIB-IIB of FIG. 2A.

FIG. 2C shows a cross-sectional view along a line IIC-IIC of FIG. 2A.

FIG. 3A shows a variation of first and second rod-like members of aframe-shaped body illustrated in FIG. 2A to FIG. 2C.

FIG. 3B shows another variation of the first and second rod-like membersof the frame-shaped body exemplified in FIG. 2A to FIG. 2C.

FIG. 4A shows a front view of a first variation of the frame-shaped bodyused in the method for attaching display panel according to Embodiment1.

FIG. 4B shows a front view of a second variation of the frame-shapedbody used in the method for attaching display panel according toEmbodiment 1.

FIG. 4C shows a front view of a third variation of the frame-shaped bodyused in the method for attaching display panel according to Embodiment1.

FIG. 4D shows a front view of a fourth variation of the frame-shapedbody used in the method for attaching display panel according toEmbodiment 1.

FIG. 5A shows a front view of a fifth variation of the frame-shaped bodyused in the method for attaching display panel according to Embodiment1.

FIG. 5B shows a plan view of the frame-shaped body illustrated in FIG.5A.

FIG. 5C shows a first variation of the first and second rod-like membersof the frame-shaped body illustrated in FIG. 5A.

FIG. 5D shows a second example of the first and second rod-like membersof the frame-shaped body illustrated in FIG. 5A.

FIG. 6A shows an example of a state in which the frame-shaped body isbonded to an attaching target surface in the method for attachingdisplay panel according to Embodiment 1.

FIG. 6B shows an example of a step in which the display panel is movedtowards the first rod-like member in the method for attaching displaypanel according to Embodiment 1.

FIG. 6C shows a cross-sectional view along a line VIC-VIC of FIG. 6B.

FIG. 6D shows an example of a step in which the display panel is pressedin the method for attaching display panel according to Embodiment 1.

FIG. 7 shows a cross-sectional view of an example of the display panelto be attached using the method for attaching display panel according toEmbodiment 1.

FIG. 8 shows an example of the display panel which has been attached toa vehicle windshield by using the method for attaching display panelaccording to Embodiment 1.

FIG. 9 shows a part of steps of the method for attaching display panelto vehicle windshield by using the method for attaching display panelaccording to Embodiment 1.

FIG. 10A shows an example of a state in which the frame-shaped body isbonded to an attaching target surface in a method for attaching displaypanel according to Embodiment 2 of the present invention.

FIG. 10B shows an example of a step in which the display panel is movedtowards the first rod-like member in the method for attaching displaypanel according to Embodiment 2.

FIG. 10C shows an example of a manner of drawing a wiring board outwardof the frame-shaped body in the method for attaching display panelaccording to Embodiment 2.

EMBODIMENT FOR CARRYING OUT THE INVENTION

Next, embodiments of a method for attaching display panel, a method forattaching display panel to vehicle windshield, and a method formanufacturing display apparatus of the present invention will bedescribed with reference to the drawings. Materials, shapes and sizes ofthe constituent elements, and their relative positions or the like inthe embodiments described below are merely illustrative. The method forattaching display panel, the method for attaching display panel tovehicle windshield, and the method for manufacturing display apparatusare not construed to be limitative thereto.

Embodiment 1

In FIG. 1, an overview of a method for attaching display panel accordingto Embodiment 1 is shown. As shown in FIG. 1, the method for attachingdisplay panel according to Embodiment 1 comprises: preparing aframe-shaped body 4 comprising a first rod-like member 1 and two secondrod-like members 2 a, 2 b, the two second rod-like members beingsubstantially parallel to each other and crossing the first rod-likemember 1; and bonding the first rod-like member 1 and the two secondrod-like members 2 a, 2 b to a given plane surface or a given curvedsurface (a surface 5 a of an object 5 in an example in FIG. 1). Themethod for attaching display panel according to Embodiment 1 furthercomprises moving a display panel 3 having a width to be supportedbetween the two second rod-like members 2 a, 2 b from first ends 4 c ofthe two second rod-like members 2 a, 2 b towards the first rod-likemember 1 along a first surface 4 a and a second surface 4 b of the twosecond rod-like members 2 a, 2 b, the first surface 4 a and the secondsurface 4 b facing each other.

Here, the expression “crossing the first rod-like member” means that atleast one of an infinite number of straight lines (hereinafter, simplyreferred to as “straight line PL”) which can be drawn between the twosecond rod-like members and are parallel to the second rod-like memberscan cross the first rod-like member. For example, in the example shownin FIG. 1 or FIG. 2A, FIG. 4B, or FIG. 5A to which reference is made inthe following description, all of the straight lines PL canperpendicularly cross the first rod-like member 1. Also, in the exampleshown in FIG. 4A to which reference is made in the followingdescription, most of such straight lines PL can perpendicularly crossthe first rod-like member 1. In these examples shown in FIG. 1, FIG. 2A,FIG. 4A, FIG. 4B, and FIG. 5A, the two second rod-like members 2 a, 2 bare orthogonal to the first rod-like member 1. In addition, in theexamples shown in FIG. 4C and FIG. 4D to which reference is made in thefollowing description, substantially all of the straight lines PL cancross the first rod-like member 1 at an arbitrary crossing angle. Then,a part of such infinite number of straight lines PL can perpendicularlycross the first rod-like member 1.

The term “given plane surface or given curved surface” denotes anarbitrary surface to which the display panel 3 is to be attached in anarbitrary object to be combined with the display panel 3. In thefollowing description, the “given plane surface or given curved surface”to which the display panel 3 is to be attached is also simply referredto as an “attaching target surface”. In the examples of the drawings towhich reference should be made in the following description, the surface5 a of the object 5 is the “attaching target surface” and thus referencenumeral 5 a is also used as a reference numeral for the “attachingtarget surface”.

In the example in FIG. 1, second ends 4 d of the two second rod-likemembers 2 a, 2 b are respectively coupled with both ends of the firstrod-like member 1. A frame-shaped body 4 having a substantially squareU-shaped form in front view is composed of the first rod-like member 1and the two second rod-like members 2 a, 2 b. The frame-shaped body 4opens at the first ends 4 c of the second rod-like members 2 a, 2 bacross the entire gap between the two second rod-like members 2 a and 2b. In the present embodiment, the display panel 3 is led into theframe-shaped body 4 (the region surrounded in three directions by thefirst rod-like member 1 and the two second rod-like members 2 a, 2 b)through this opening of the frame-shaped body 4 and then is movedtowards the first rod-like member 1.

A groove-shaped concave portion 4 e is provided on the first surface 4 aand the second surface 4 b of the second rod-like members 2 a, 2 billustrated in FIG. 1. When the display panel 3 is moved towards thefirst rod-like member 1, two edges (first edge 3 a and second edge 3 b)of the display panel 3 facing each other are inserted into the concaveportions 4 e of the second rod-like members 2 a, 2 b. And the displaypanel 3 is moved towards the first rod-like member 1 while the firstedge 3 a and the second edge 3 b are respectively inserted into theconcave portions 4 e.

In the example in FIG. 1, a weak adhesive layer 6 is formed at a portionsurrounded by the frame-shaped body 4 in the attaching target surface 5a. The weak adhesive layer 6 is formed using an adhesive agent on theattaching target surface 5 a or a surface of the display panel 3 whichis oriented to the attaching target surface 5 a so as to bring theattaching target surface 5 a and the display panel 3 into close contactwith each other. FIG. 1 shows an example of a case in which the firstrod-like member 1 and the two second rod-like members 2 a, 2 b arebonded to the attaching target surface 5 a by using an adhesive agent 8.Furthermore, a wiring board 9 is also connected to the display panel 3.

In the present embodiment, the display panel 3 having a width to besupported between the two second rod-like members 2 a, 2 b is attachedto the attaching target surface 5 a. That is, the two second rod-likemembers 2 a, 2 b are bonded to the attaching target surface 5 a apartfrom each other at an interval in which the display panel 3 can besupported. The two second rod-like members 2 a, 2 b are bonded atrespective positions facing each other via a predetermined region atwhich the display panel 3 is to be attached (hereinafter, this region isalso simply referred to as a “attaching target region”). Therefore, itis possible to position the display panel 3 appropriately at theattaching target region in the direction in which the two secondrod-like members 2 a, 2 b facing each other, by only placing the displaypanel 3 along the first surface 4 a and the second surface 4 b of thetwo rod-like members 2 a, 2 b at the time of moving the display panel 3towards the first rod-like member 1.

The first rod-like member 1 can also be bonded at a position which isdetermined based on the attaching target region in the attaching targetsurface 5 a. The first rod-like member 1 is preferably bonded at aposition which is determined so that while moving the display panel 3towards the first rod-like member 1, the display panel 3 abuts againstthe first rod-like member 1 when the display panel 3 reaches theattaching target region or a position right above the attaching targetregion. By doing so, it is possible to position the display panel 3appropriately at the attaching target region in a parallel direction tothe second rod-like members 2 a, 2 b, by merely moving the display panel3 until the display panel 3 abuts against the first rod-like member 1.

In other words, the frame-shaped body 4 is bonded to the attachingtarget surface 5 a so that the attaching target region are preferablysurrounded in three directions along an outer edge of the attachingtarget region by the first rod-like member 1 and the two second rod-likemembers 2 a, 2 b. In that case, it is possible to position the displaypanel 3 easily and appropriately at a predetermined attaching targetregion, by moving the display panel 3 along the first surface 4 a andthe second surface 4 b of the two second rod-like members 2 a, 2 b untilthe display panel 3 abuts against the first rod-like member 1.Accordingly, it is possible to reduce repetitive operation for positionadjustment of the display panel 3 or rearrangement of the display panel3, or the like. Therefore, it is possible to lower a risk of breakingthe display panel 3. When the first rod-like member 1 and the secondrod-like members 2 a, 2 b are bonded, positioning these members isrequired, however, each rod-like member and the frame-shaped body 4 havea simpler structure in comparison with the display panel 3 and can beprepared at a low cost. Therefore, it is considered that even if theoperation such as the position adjustment and the rearrangement arerepeated at the time of the bonding, these members are unlikely tobreak, and even if a breakage occurs, a significant loss is not likelyto occur.

Further, the display panel 3 that is attached to the attaching targetsurface 5 a by the method for attaching display panel according to thepresent embodiment can be prevented from moving outward from theframe-shaped body 4 by the first rod-like member 1 and the two secondrod-like members 2 a, 2 b. An outward movement of the display panel 3through the opening of the frame-shaped body 4 and a movement of thedisplay panel 3 in a direction in which the panel is separated from theattaching target surface 5 a can be restricted by a frictional forcethat can act on a contact surface between each rod-like member and thedisplay panel 3 or an action exerted by the weak adhesive layer 6described above, or the like. In the example of FIG. 1 in particular,each of the first and second edges 3 a, 3 b of the display panel 3 isinserted into the concave portion 4 e of the second rod-like member 2 a,2 b, and therefore, owing to engagement between the first and secondedges 3 a, 3 b and the concave portion 4 e, movement of the displaypanel 3 in the direction in which the panel is separated from theattaching target surface 5 a is more surely prevented. Further, in acase where the display panel 3 is used while being oriented such thatthe first rod-like member 1 is located at lower side, in a gravitationaldirection, than the first ends 4 c of the two second rod-like members 2a, 2 b and the opening of the frame-shaped body 4, the outward movementof the display panel 3 through the opening of the frame-shaped body 4can be further restricted by gravity.

In this way, the display panel 3 that was attached to the attachingtarget surface 5 a by using the attaching method of the presentembodiment can be prevented from separating from the attaching targetsurface 5 a and shifting significantly on the attaching target surface 5a during use. That is, in the present embodiment, it is not alwaysnecessary to fix the display panel 3 on the attaching target surface 5 ausing an adhesive agent or the like. Therefore, the display panel 3 thatwas attached by using the method of the present embodiment can be easilydetached from the attaching target surface 5 a. For example, merely bymoving the display panel 3 in a direction opposite to the direction inwhich the display panel 3 was moved at the time of attaching, thedisplay panel 3 and the attaching target surface 5 a can be easilyseparated from each other. In a case where the attaching target surface5 a is a surface of a window glass, when the window glass breaks, thedisplay panel 3 can be detached from the attaching target surface 5 aand reused. Alternatively, when the display panel 3 breaks, the displaypanel 3 can be easily replaced with another display panel 3. That is, itis possible to avoid a situation in which both the display panel 3 andan arbitrary object 5 having the attaching target surface 5 a must bediscarded although a defect or malfunction has merely occurred with onlyeither one of the display panel 3 and the arbitrary object 5.

In FIG. 2A to FIG. 2C, an example of a display panel (display panel 3)that was attached to the attaching target surface 5 a by using themethod for attaching display panel according to the present embodimentis shown together with the frame-shaped body 4. A display apparatus 10including at least the display panel 3, the frame-shaped body 4 and theobject 5 having the attaching target surface 5 a can be manufactured byattaching the display panel 3 to the attaching target surface 5 a byusing the method for attaching the display panel according to thepresent embodiment. FIG. 2B shows a cross section along the line IIB-IIBshown in FIG. 2A, and FIG. 2C shows a cross section along the lineIIC-IIC. In FIG. 2A to FIG. 2C, similar constituent elements to thoseshown in FIG. 1 described above are referred with the same referencenumerals as those of FIG. 1. As shown in FIG. 2A to FIG. 2C, theframe-shaped body 4 having a substantially square U-shaped planar shapeis bonded to the attaching target surface 5 a using the adhesive 8. Theframe-shaped body 4 includes: the first rod-like member 1; and the twosecond rod-like members 2 a, 2 b parallel to each other, orthogonal tothe first rod-like member 1 and respectively coupled with either one ofboth ends of the first rod-like member 1. The frame-shaped body 4 opensthroughout an edge which is opposite to the first rod-like member 1. Thedisplay panel 3 includes a plurality of pixels 31 arranged in a matrixform, and is held on the attaching target surface 5 a by theframe-shaped body 4. A wiring board 9 is connected to the display panel3.

As shown in FIG. 2B, groove-shaped concave portions 4 e 1, 4 e 2 arerespectively provided on the first surface 4 a and the second surface 4b, facing each other, of the second rod-like members 2 a, 2 b. The firstedge 3 a of the display panel 3, which is adjacent to the first surface4 a of the second rod-like member 2 a, is inserted into the concaveportion 4 e 1. Similarly, the second edge 3 b of the display panel 3,which is adjacent to the second surface 4 b of the second rod-likemember 2 b, is inserted into the concave portion 4 e 2. Also, as shownin FIG. 2C, a groove-shaped concave portion 4 e 3 is provided on asurface of the first rod-like member 1 facing the inside of theframe-shaped body 4. Then, a third edge 3 c of the display panel 3,which is adjacent to the first rod-like member 1, is inserted into theconcave portion 4 e 3.

The weak adhesive layer 6 is interposed between the display panel 3 andthe attaching target surface 5 a. The display panel 3 and the attachingtarget surface 5 a are brought into close contact with each other,preferably in a substantially gapless state, owing to the adhesivenessthat the weak adhesive layer 6 provides. Further, as shown in FIG. 2Aand FIG. 2C, the wiring board 9 is drawn to outside of the frame-shapedbody 4 through the opening of the frame-shaped body 4.

The first rod-like member 1 and the two second rod-like members 2 a, 2 bare formed of any material having rigidity and durability sufficient toserve as a guiding part for the display panel 3 when the display panel 3is attached , and thereafter, to prevent an unintended outward movementof the display panel 3 from the frame-shaped body 4. Examples of thematerials for each rod-like member, that is, the frame-shaped body 4include, for example, a synthetic resin such as an epoxy resin or ageneral purpose plastics, a natural resin such as a natural rubber, anda rubber sponge. It is preferable that the frame-shaped body 4 is formedof a material with a less frictional coefficient in view of easiness formoving the display panel 3 at the time of attaching the display panel 3.For example, a fluorine resin such as PTFE, a polyacetal resin, or apolyamide resin can be used. However, in view of the function ofpreventing the movement of the display panel 3 in use, a silicone-basedresin or a natural or synthetic rubber each having an appropriatefrictional coefficient may be used as a material for the frame-shapedbody 4. The frame-shaped body 4 may also be formed using a lighttransmissive material so as to be unlikely to be recognized by a user ofthe display panel 3. It is particularly useful to use the lighttransmissive material, in a case where the object 5 having the attachingtarget surface 5 a is formed of the light transmissive material (such asa glass, transparent polyimide, PET or the like) and further the displaypanel 3 has light transmission property. In this respect, it ispreferable that the frame-shaped body 4 is formed using a transparentsilicone rubber, an acrylic-based resin or the like, and theframe-shaped body 4may be formed using a glass.

Examples of the display panel 3 that is attached by using the method ofthe present embodiment include an organic EL display panel and a liquidcrystal display panel. However, the display panel 3 is not limited tothose panels. In addition, the method of the present embodiment may beused for the display panel 3 having flexibility, and may be used for thedisplay panel 3 such as a transparent organic EL display panel, which isformed of a material having light transmission property.

The weak adhesive layer 6 is composed of an adhesive agent including,for example, acrylic-based resin, silicone-based resin, or aurethane-based resin solely or in combination of a plurality thereof asmain component. The term “weak adhesive” refers to the adhesion to anextent enough to adhere to an adhesion object tightly and yet to bereleased easily from the adhesion object when subjected to a force in areleasing direction without causing any damage to the adhesion object orleaving any glue on the adhesion surface. By forming the weak adhesivelayer 6, the display panel 3 and the attaching target surface 5 a aresubstantially securely brought into close contact with each other.Therefore, it is possible to prevent lifting of the display panel 3 andair bubble entrapment at an interface between the display panel 3 andthe attaching target surface 5 a or the like. Moreover, the displaypanel 3 can be easily detached as required without excessive damage withthe display panel 3 or the object 5.

The wiring board 9 electrically connects a driver (not shown) whichsupplies a drive signal to the display panel 3 and the display panel 3to each other. Examples of the wiring board 9 include a flexible printedcircuit (FPC) having a flexible film formed of a resin such as polyimideor polyethylene terephthalate and a wiring pattern formed on theflexible film using a conductor such as copper. The wiring board 9 isconnected to the display panel 3 at one end of the wiring board 9. Suchone end of the wiring board 9 is connected, using an anisotropicconductive film (ACF), to a connection pad (not shown) provided on adisplay surface 32 of the display panel 3. In place of the wiring board9, a plurality of cables may be used and one ends of such cables may beconnected to the display panel 3.

The attaching target surface 5 a, as described above, may be a planesurface as in the examples of FIG. 2A to FIG. 2C or may be a curvedsurface. The object 5 having the attaching target surface 5 a as one ofsurfaces thereof may be any member, any article, or any structure inwhich the display panel 3 can be attached on the one surface (attachingtarget surface 5 a). The object 5 can be formed using any material suchas a glass, a metal, and a synthetic resin or the like. In a case wherethe display panel 3 has flexibility, it is preferable that the object 5have rigidity sufficient to appropriately support the display panel 3.That is, the object 5 may be an armoring member referred to, forexample, case, cover, or casing and having a predetermined rigidity toimpart durability against external mechanical stress to the displaypanel 3. In addition, on the surface (mainly the surface other than theattaching target surface 5 a) of the object 5, a desired decoration maybe applied, and the object 5 may have a shape suitable for a situationin which the display panel 3 is used. Therefore, a display apparatusprovided with the display panel and the covering member and having adesired rigidity, decorativeness, and easiness of handling can bemanufactured by attaching the display panel to the given plane surfaceor curved surface by using the method for attaching display panelaccording to the present embodiment. Further, the object 5 may also beany member constituting various devices, apparatuses, tools orstructures other than the display panel 3 or may be a part thereof. Forexample, the object 5 may be a glass plate used in a household window, ashow window, or an exhibition case or the like, and may be a memberconstituting the casings of various apparatuses or the interior orexterior walls of building. Furthermore, the object 5 may be a vehiclewindshield, and the attaching target surface 5 a may be a surface of thevehicle windshield oriented to an interior of the vehicle. An arbitrarydevice or apparatus provided with a display panel can be manufactured byattaching the display panel to the given plane surface or the givencurved surface by using the method for attaching display panel accordingto the present embodiment.

FIG. 3A and FIG. 3B show variations of the first rod-like member 1 andthe second rod-like members 2 a, 2 b in the frame-shaped body 4 shown inFIG. 2A to FIG. 2C. In addition, in FIG. 4A to FIG. 4D and FIG. 5A toFIG. 5D variations of the frame-shaped body 4 are shown. Each of FIG.3A, FIG. 3B, and FIGS. 5B to 5D shows each variation of the frame-shapedbody 4, together with the attaching target surface 5 a, in such a way asto view the frame-shaped body 4 along a direction towards the firstrod-like member 1 from the first ends 4 c (refer to FIG. 2A) of thesecond rod-like members 2 a, 2 b. In each figure, the display panel 3 isappropriately drawn by the chain double-dashed line. In the method ofthe present embodiment, the frame-shaped body 4 of various modes asshown in the figures can be used.

In the example shown in FIG. 3A, the second rod-like members 2 a, 2 beach have a L-shaped cross-sectional shape, and the concave portions 4 eare provided by a step that are formed on the first surface 4 a and thesecond surface 4 b. In the first rod-like member 1 as well, the concaveportion 4 e is provided by a step that is formed on a surface facing theinside of the frame-shaped body 4. The interior wall of the concaveportion 4 e facing the step that is provided in each rod-like member iscomposed of the attaching target surface 5 a. Each edge of the displaypanel 3 is inserted into the concave portion 4 e. Therefore, aseparating movement of the display panel 3 from the attaching targetsurface 5 a can be prevented. Although the weak adhesive layer 6 (referto FIG. 2B) is not shown in FIG. 3A and the FIG. 3B described below,even in a case where the frame-shaped body 4 shown in FIG. 3A and FIG.3B is used, the weak adhesive layer 6 may be formed.

In a case where movement of the display panel 3 in the direction inwhich the display panel is separated from the attaching target surface 5a can be prevented by the frictional force between the display panel 3and each rod-like member or the effect of the weak adhesive layer 6(refer to FIG. 2B), the concave portion may not be provided in eachrod-like member as in the example shown in FIG. 3B. That is, in thepresent embodiment, the first rod-like member 1 and the second rod-likemembers 2 a, 2 b that have no groove or step each of which canconstitute the concave portion 4 e (refer to FIG. 3A) can be used. Inthe example of FIG. 3B, both the first surface 4 a and the secondsurface 4 b of the second rod-like members 2 a, 2 b are flat, andtherefore, no concave portion is formed. In the first rod-like member 1as well, no concave portion is formed on the surface facing the insideof the frame-shaped body 4. Hence, in the method of the presentembodiment, a concave portion may not always be provided, and theframe-shaped body 4 as shown in FIG. 3B can be used.

FIG. 4A shows a first variation of the frame-shaped body 4 used in themethod of the present embodiment. The first rod-like member 1 and thetwo second rod-like members 2 a, 2 b which are used in the method of thepresent embodiment may not always be coupled with each other likely tothe example of FIG. 2A. That is, as shown in FIG. 4A, there may be usedthe frame-shaped body 4 composed of the first rod-like member 1 and thesecond rod-like members 2 a, 2 b that are independent of each other. Inthe example of FIG. 4A, the first rod-like member 1 and the two secondrod-like members 2 a, 2 b that are individually formed are bonded to theattaching target surface 5 a while being spaced from each other. In sucha frame-shaped body 4 as well, the movement of the display panel 3 ineach direction can be prevented by a similar action to the action of theframe-shaped body 4 illustrated in FIG. 2A.

FIG. 4B shows a second variation of the frame-shaped body 4 used in themethod of the present embodiment. In the example of FIG. 4B, both endsof the first rod-like member 1 are coupled with the second rod-likemembers 2 a, 2 b respectively at a substantially intermediate positionin a longitudinal direction of each of the two second rod-like members 2a, 2 b, and the frame-shaped body 4 having a substantially H-shapedfront shape is formed. By using the frame-shaped body 4 in the exampleof the FIG. 4B, the display panel 3 can be easily attached to either oneof or both of the two attaching target regions which are provided so asto interpose the first rod-like member 1. That is, when one displaypanel 3 is attached, the display panel 3 may be moved from the firstends 4 c of the second rod-like members 2 a, 2 b towards the firstrod-like member 1, or the display panel 3 may be moved from the secondends 4 d towards the first rod-like member 1. In addition, when twodisplay panels 3 are attached, one of the two display panels 3 may bemoved from the first ends 4 c towards the first rod-like member 1 andthe other of the two display panels 3 may be moved from the second ends4 d towards the first rod-like member 1. Even in a case where the firstends 4 c or the second ends 4 d are located at lower side, in agravitational direction, than the first rod-like member 1, it isconsidered that a separation of the display panel 3 from the attachingtarget surface 5 a can be prevented by, for example, appropriateselection with respect to the weak adhesive layer 6 described above.Using the method of the present embodiment, it is also easy to detachthe display panel 3 from one of the two attaching target regions andattached to another of the two attaching target regions according to asituation in use. A coupling part in the second rod-like members 2 a, 2b to the first rod-like member 1 may not always be a substantiallyintermediate part in the longitudinal direction of the second rod-likemembers 2 a, 2 b.

In FIG. 4C, there is shown an example of the first rod-like member 1having a curved shape and used suitably for the display panel 3 having acurved part at an outer edge. The first rod-like member 1 curves so asto be convex along by an opposite direction to a direction facing thefirst ends 4 c of the second rod-like members 2 a, 2 b, and theframe-shaped body 4 has a substantially U-shaped front shape. The firstrod-like member 1 may curve in the entirety thereof as shown in FIG. 4C,alternatively, only a part of the first rod-like member 1 may curve. Inthe example of FIG. 4C, the front shape of the display panel 3 is anelliptical shape having a long diameter d1 and a short diameter d2, andthe display panel 3 is inserted into the frame-shaped body 4 in anorientation in which the long diameter d1 is parallel to the secondrod-like members 2 a, 2 b. The first rod-like member 1 curves in anelliptical arc shape so as to be along the outer edge of the displaypanel 3. In a case where the first rod-like member 1 curves in theelliptical arc shape, it is possible to prevent the display panel 3 fromrotating about an axis which is orthogonal to the display surface of thedisplay panel 3.

It is preferable that a curvature of the curved part of the firstrod-like member 1 is substantially equal to a curvature of the outeredge of the display panel 3. Specifically, it is preferable that acurved line drawn on the attaching target surface 5 a by the inmost part(the part against which the display panel 3 abuts) of the concaveportion 4 e 3 of the first rod-like member 1 is along an arc of asemi-ellipse obtained by dividing the ellipse having the long diameterd1 and the short diameter d2 in half in a long diameter direction(radius of the longer axis of the semi-ellipse: r1=(d1)/2, radius of theshorter axis of the semi-ellipse: r2=(d2)/2).

In addition, a length L1 from the inmost part of the concave portion 4 e3 on a central axis of the first rod-like member 1 (the axis beingparallel to the second rod-like members 2 a, 2 b) to an end surface ofthe second rod-like members 2 a, 2 b at the first ends 4 c is preferablyequal to the long diameter d1 of the display panel 3.

In a case where the first rod-like member 1 has a curved part, thecurved part may not always curve so as to be along the elliptical arc.As in the example shown in FIG. 4D, the curved part may curve so as tolie along an arc of a perfect circle. An inmost part of the concaveportion 4 e 3 of the first rod-like member 1 draws an arc of the perfectcircle of radius r3 on the attaching target surface 5 a. The firstrod-like member 1 illustrated in FIG. 4D is used for the display panel 3having a front shape which includes a semicircular shape of radius r3(semicircle of the perfect circle) and a rectangular shape connected tothe semicircular shape. The display panel 3 is inserted into theframe-shaped body 4 with the semicircular part at the head. Rotationabout the axis which is orthogonal to the display surface of the displaypanel 3 can be prevented owing to abutment between the rectangular partof the display panel 3 and the second rod-like members 2 a, 2 b.

FIG. 5A and FIG. 5B show a fifth variation of the frame-shaped body 4used in the method of the present embodiment. The frame-shaped body 4illustrated in FIG. 5A and FIG. 5B is composed of the first rod-likemember 1, the two second rod-like members 2 a, 2 b, and a plate-shapedmember 43. The plate-shaped member 43 has: long edges having a lengthwhich is substantially equal to a length of the first rod-like member 1;and short edges having a length which is substantially equal to a lengthof each of the second rod-like members 2 a, 2 b, and has a substantiallyrectangular front shape. Further, the plate-shaped member 43 is coupledwith the first rod-like member 1 at one of the two long edges and iscoupled with the second rod-like members 2 a, 2 b at the two shortedges. Each of the long edge and the short edges of the plate-shapedmember 43 is coupled with a surface of each of the first rod-like member1 and the second rod-like members 2 a, 2 b, the surface being oppositeto a surface to be oriented to the attaching target surface 5 a. Thefirst rod-like member 1, the second rod-like members 2 a, 2 b, and theplate-shaped member 43 may be integrally formed, alternatively, theplate-shaped member 43 may be fixed, with an adhesive, to the firstrod-like member 1 and the second rod-like members 2 a, 2 b that arebonded to the attaching target surface 5 a.

As shown in FIG. 5B, the frame-shaped body 4 is bonded to the attachingtarget surface 5 a while the surfaces opposite to the surfaces coupledwith the plate-shaped member 43 in the first rod-like member 1 and thesecond rod-like member 2 a, 2 b being oriented to the attaching targetsurface 5 a. In the method of the present embodiment using theframe-shaped body 4 in the example of FIG. 5A and FIG. 5B, the displaypanel 3 (refer to FIG. 2B) is inserted into a space which is surroundedby each rod-like member between the plate-shaped member 43 and theattaching target surface 5 a. Therefore, a display surface 32 (refer toFIG. 2B) of the display panel 3 is covered with the plate-shaped member43. Hence, the plate-shaped member 43 is formed using a lighttransmissive material. The frame-shaped body 4 may be entirely formed ofthe light transmissible material. The transparent silicone-based rubber,acrylic-based resin or glass or the like described previously can beused as a material for the plate-shaped member 43. The plate-shapedmember 43 can also function as a protection cover of the display panel3.

In the examples shown in FIG. 5A and FIG. 5B, the first surface 4 a andthe second surface 4 b of the second rod-like members 2 a, 2 b do nothave the concave portion 4 e (refer to FIG. 1), and moreover, the weakadhesive layer 6 (refer to FIG. 1) is not formed. However, when thedisplay panel 3 moves along a direction in which the display panel 3 isseparated from the attaching target surface 5 a, the display panel 3abuts against the plate-shaped member 43. That is, the plate-shapedmember 43 can have a function of preventing the display panel 3 frommoving to separate from the attaching target surface 5 a. Preferably, atotal thickness T42 of a thickness of each of the second rod-likemembers 2 a, 2 b and a thickness of the adhesive 8 is made substantiallyequal to a thickness of the display panel 3. By doing so, a backlash inthe thickness direction around the display panel 3 inside theframe-shaped body 4 can be reduced. In a case where the frame-shapedbody 4 with the plate-shaped member 43 is used, the weak adhesive layer6 may be formed. In addition, in the frame-shaped body 4 provided withthe plate-shaped member 43 as well, as shown in FIG. 5C and FIG. 5D, theconcave portion 4 e may be provided by forming the groove or the step inthe first rod-like member 1 and the second rod-like members 2 a, 2 b.

In the example of FIG. 5C, as with the example of FIG. 2B describedabove, groove-shaped concave portion 4 e is provided on the secondrod-like members 2 a, 2 b themselves. Also, in the example of FIG. 5D,as with the example of FIG. 3A described above, the concave portion 4 eis provided by forming the step on the first surface 4 a and the secondsurface 4 b of the second rod-like members 2 a, 2 b. Further, FIG. 5Cand FIG. 5D show examples in which the weak adhesive layer 6 is formed.Thus, even in a case where the frame-shaped body 4 provided with theplate-shaped member 43 capable of covering the display panel 3 is used,the concave portion 4 e may be provided in each rod-like member, and theweak adhesive layer 6 may be formed.

Next, referring to FIG. 6A to FIG. 6D, the steps in the method forattaching display panel according to Embodiment 1 will be described inorder. In FIG. 6A to FIG. 6D, similar constituent elements to thoseshown in FIG. 1 and FIG. 2A to FIG. 2C described above are referred withsame reference numerals as those of FIG. 1 or the like, and a duplicatedescription thereof is appropriately omitted.

As shown in FIG. 6A, the frame-shaped body 4 comprising the firstrod-like member 1 and the two second rod-like members 2 a, 2 b isprepared and is bonded to the attaching target surface 5 a. The twosecond rod-like members 2 a, 2 b are substantially parallel to eachother and cross the first rod-like member 1. Any of the examples shownin FIG. 2A to FIG. 2C, FIG. 3A, FIG. 3B, FIG. 4A to FIG. 4D, and FIG. 5Ato FIG. 5D described above may be prepared as the frame-shaped body 4.In addition, modification may be further applied to the frame-shapedbody 4 which appropriately includes the first rod-like member 1 and thesecond rod-like members 2 a, 2 b, and such frame-shaped body 4 may beused. In FIG. 6A to FIG. 6D (and FIG. 8, FIG. 9, and FIG. 10A to FIG.10C which will be described below), the frame-shaped body 4 shown inFIG. 2A to FIG. 2C is shown as an example.

The frame-shaped body 4 is positioned so as to surround a attachingtarget region A at which the display panel 3 (refer to FIG. 6B) is to beattached on the attaching target surface 5 a, and then, the frame-shapedbody 4 is bonded at the position. That is, the first rod-like member 1and the second rod-like members 2 a, 2 b are respectively positioned soas to be along the edge of the attaching target region A. For example,in a case where the attaching target region A has rectangular shape(that is, the front shape of the display panel 3 is rectangular), thefirst rod-like member 1 is positioned outside of the attaching targetregion A and along a one edge of the attaching target region A. Each ofthe two second rod-like members 2 a, 2 b is positioned outside theattaching target region A and along a one of two edges of the attachingtarget region A, the two edges being orthogonal to the one edgedescribed above. It can be appreciated that the display panel 3 can beattached at any position on the attaching target surface 5 a that is onesurface of the object 5. Therefore, the frame-shaped body 4 can also bebonded at any position on the attaching target surface 5 a.

In the example of FIG. 6A, the frame-shaped body 4 is bonded in anorientation in which the frame-shaped body 4 opens at the outer edge ofthe attaching target surface 5 a, that is, in an orientation in whichthe first ends 4 c of the second rod-like members 2 a, 2 b are adjacentto the outer edge of the attaching target surface 5 a. When the openingof the frame-shaped body 4 is positioned in the vicinity of the outeredge of the attaching target surface 5 a, there is a case where thedisplay panel 3 (refer to FIG. 6B) is easily moved from the first ends 4c of the second rod-like members 2 a, 2 b towards the first rod-likemember 1.

The object 5 is directed in any orientation relative to thegravitational direction during use of the display panel 3. For example,the object 5 is placed in an orientation in which gravitational actsalong a direction indicated by the arrow Y in the example of FIG. 6A. Inthat case, it may be preferable that as shown in FIG. 6A, during use ofthe display panel 3, the first rod-like member 1 is bonded at a positionwhich is to be lower in the gravitational direction than the first ends4 c of the two second rod-like members 2 a, 2 b on the attaching targetsurface 5 a. This is because movement of the display panel 3 outward ofthe frame-shaped body 4 through the opening of the frame-shaped body 4is restricted by gravity.

The frame-shaped body 4 is bonded to the attaching target surface 5 a,for example, by using the adhesive 8 (refer to FIG. 2B), as describedabove although means for bonding the frame-shaped body 4 to theattaching target surface 5 a is not particularly limited. If necessary,heating processing is performed for curing of the adhesive 8. Theadhesive 8 may be applied to either one of or both of the attachingtarget surface 5 a and a bonding surface of the frame-shaped body 4 withthe attaching target surface 5 a, or the adhesive 8 may be placedbetween the frame-shaped body 4 and the attaching target surface 5 aafter being molded into a form of a frame-like sheet (refer to FIG. 1).

The adhesive 8 used to bond the frame-shaped body 4 is not particularlylimited as long as it is possible to develop the bonding strengthcapable of stably bonding the frame-shaped body 4 to the attachingtarget surface 5 a. An arbitrary epoxy adhesive or acrylic adhesive canbe used as the adhesive 8. Preferably, a light transmissive adhesive 8is used to bond the frame-shaped body 4. As described above, in a casewhere the frame-shaped body 4 is formed using a light transmissivematerial, it is particularly preferable to use the light transmissiveadhesive 8. For example, any adhesive which is called Optical ClearAdhesive (OCA) or Optical Clear Resin (OCR) such as a film-like orpaste-like acrylic-based, silicone-based or urethane-based adhesive canbe used as the adhesive 8. The bonding strength between the frame-shapedbody 4 and the attaching target surface 5 a that is obtained by theadhesive 8 is larger than 5.0 N/10 mm and is 10 N/10 mm or less, forexample.

Next, as shown in FIG. 6B and FIG. 6C, the display panel 3 is led intothe frame-shaped body 4 from the first ends 4 c of the two secondrod-like members 2 a, 2 b and further moved towards the first rod-likemember 1. Prior to this step, preferably, the weak adhesive layer 6 isformed using the adhesive agent on the attaching target surface 5 a. Theweak adhesive layer 6 may be formed, not on the attaching target surface5 a, but on a surface of the display panel 3 which is oriented to theattaching target surface 5 a as indicated by the chain double-dashedline in FIG. 6C. The weak adhesive layer 6 is formed by disposing a weakadhesive sheet, formed by molding, for example, adhesive agent into apredetermined shape, on the attaching target surface 5 a or on thesurface of the display panel 3 which is oriented to the attaching targetsurface 5 a.

The adhesive agent constituting the weak adhesive layer 6, as describedabove, can include acrylic-based, silicone-based, or urethane-basedresin as main component. The acrylic resin has superior weatherresistance and heat resistance and further has superior transparency. Ina case where the display panel 3 is a transparent organic EL displaypanel and the display panel 3 is attached to any transparent object 5,the weak adhesive layer 6 having high transparency is preferred in thatthe light transmission property is hardly influenced. The silicone-basedresin also has superior weather resistance and transparency and furtherhas particularly superior heat resistance and hardly turns to yellow andthus is preferred as a material for the weak adhesive layer 6.

In addition, the weak adhesive layer 6 is preferably formed using anadhesive agent which does not have adhesiveness under a normal pressurebut develops adhesiveness by being pressurized. Here, the expression“does not have adhesiveness” means that in a state where an exposedsurface of the weak adhesive layer 6 formed on the attaching targetsurface 5 a or on the display panel 3 and the object around the exposedsurface come into contact with each other, the weak adhesive layer 6does not have any adhesiveness to such an extent that a slide relativeto the object is hindered. If the weak adhesive layer 6 is formed inthat way, when the display panel 3 is moved towards the first rod-likemember 1, even in a case where the weak adhesive layer 6 and the displaypanel 3 (the attaching target surface 5 a in a case where the weakadhesive layer 6 is formed on the display panel 3) come into contactwith each other, the display panel 3 can be moved smoothly without anyproblem. Then, by pressing the display panel 3 towards the attachingtarget surface 5 a after the display panel 3 has been moved as describedbelow, it is possible to cause the weak adhesive layer 6 to develop theadhesiveness and to bring the weak adhesive layer 6 into close contactwith the display panel 3. A general pressure sensitive adhesive agentcan be used for the adhesive agent which develops the adhesiveness byapplying pressure. For example, a double-sided adhesive tape providedwith a weak adhesive film formed of a pressure sensitive adhesive agentis used as the weak adhesive layer 6.

An adhesion strength between the weak adhesive layer 6 and either one ofor both of the display panel 3 and the attaching target surface 5 a is,for example, 0.02 N/10 mm or more and 5.0 N/10 mm or less, and ispreferably 1.5 N/10 mm or more and 2.0 N/10 mm or less. If the adhesionstrength of this range is obtained, it is considered that thepossibility that the display panel 3 is unintentionally separated fromthe attaching target surface 5 a is low. In addition, it is consideredthat when detaching the display panel 3 intentionally from the attachingtarget surface 5 a, the display panel 3 and the attaching target surface5 a can be easily separated from each other merely by pulling thedisplay panel 3 with an appropriate force.

Further, the method for attaching display panel according to the presentembodiment, as shown in FIG. 6C, may further comprise providing thestrong adhesive layer 7 having an adhesive force equal to or more thanthe adhesive force of the weak adhesive layer 6 between the weakadhesive layer 6 and the display panel 3 in addition to formation of theweak adhesive layer 6. In a case where the weak adhesive layer 6 isformed on the attaching target surface 5 a, the strong adhesive layer 7can be formed between the weak adhesive layer 6 and the attaching targetsurface 5 a. The strong adhesive layer 7 can closely contact with thedisplay panel 3 or the attaching target surface 5 a at a strongerstrength than the adhesion strength between the weak adhesive layer 6and the attaching target surface 5 a or the display panel 3. Inaddition, the strong adhesive layer 7 and the weak adhesive layer 6 arebonded to each other at a stronger strength than at least the adhesionstrength between the weak adhesive layer 6 and the attaching targetsurface 5 a or the display panel 3. If the strong adhesive layer 7bonded to the weak adhesive layer 6 in this manner is formed, thedisplay panel 3 can be detached from the attaching target surface 5 a ina state that the weak adhesive layer 6 remains on either desired one ofthe display panel 3 and the attaching target surface 5 a. Consequently,the work of detaching or replacing the display panel 3 may become easy.

Each of the adhesion strength between a strong adhesive layer 7 and thedisplay panel 3 and the adhesion strength between the strong adhesivelayer 7 and the attaching target surface 5 a is, for example, 2.5 N/10mm or more and 20 N/10 mm or less, and is preferably 5.0 N/10 mm or moreand 20 N/10 mm or less. If such adhesion strength is obtained, thedisplay panel 3 can be detached in a state that the weak adhesive layer6 is securely adhered to a desired element (display panel 3 or attachingtarget surface 5 a). The strong adhesive layer 7 can also be formedusing a material which can include acrylic-based resin, silicone-basedresin, or urethane-based resin as main component. In addition, the weakadhesive layer 6 and the strong adhesive layer 7 may be laminated via afilm-like material formed using polyethylene terephthalate or the like.

Examples of the display panel 3 to be attached by using the method forattaching display panel according to the present embodiment include, asdescribed above, an organic EL display panel and a liquid crystaldisplay panel or the like, however, the display panel 3 is not limitedto those panels. The wiring board 9 is connected to the display panel 3by, for example, thermocompression bonding using the ACF as describedabove. The wiring board 9 and the display panel 3 may be connected toeach other using a connector (not shown).

In the method of the present embodiment, no adhesive or the like is usedto fix the display panel 3 to the attaching target surface 5 a and thusit is preferable that permeation of moisture to an interface between thedisplay panel 3 and the attaching target surface 5 a is surely preventedin view of maintaining the state of close contact therebetween.Therefore, in order to prevent entry of moisture into the display panel3, prior to attaching of the display panel 3 to the attaching targetsurface 5 a, a barrier layer 33 (refer to FIG. 6C) may be formed using amoisture impermeable material on the display surface 32. Examples of themoisture impermeable material include silicon nitride, silicon oxide,and silicon nitride oxide or the like. One of a silicon nitride layer, asilicon oxide layer, and a silicon nitride oxide layer may be formed asthe barrier layer 33, alternatively, two or more of these layers may beformed in a laminated form. Further, in addition to these layers formedusing an inorganic material, a barrier layer 33 including an organiclayer formed using, for example, an epoxy resin or an acrylic resin maybe formed. The layer such as a silicon nitride layer formed using aninorganic material can be formed by using PECVD or sputtering or thelike. The organic layer can be formed using a printing technique usingan inkjet printer.

Subsequently, the display panel 3 is inserted between the two secondrod-like members 2 a, 2 b from the first ends 4 c of the two secondrod-like members 2 a, 2 b. In the examples of FIG. 6A to FIG. 6D, thefirst edge 3 a and the second edge 3 b of the display panel 3 arerespectively inserted into the concave portion 4 e from the first ends 4c of the second rod-like member 2 a, 2 b. Subsequently, the displaypanel 3 is moved to the first rod-like member 1 along the first surface4 a and the second surface 4 b of the two second rod-like members 2 a, 2b while the first edge 3 a and the second edge 3 b are respectivelyinserted into the concave portion 4 e. The display panel 3 is moveduntil the display panel 3 reaches a predetermined attaching targetregion. The display panel 3 is preferably moved until the display panel3 abuts against the first rod-like member 1, then, the step of movingthe display panel 3 completes.

Concurrently with the completion of moving the display panel 3,attaching the display panel 3 by the method of attaching display panelaccording to the present embodiment can be completed. However, after thecompletion of the step of moving the display panel 3, the method of thepresent embodiment may further comprise pressing the display panel 3against the attaching target surface 5 a as shown in FIG. 6D, so thatthe display panel 3 and the attaching target surface 5 a closely contactwith each other via the weak adhesive layer 6. In a case where the weakadhesive layer 6 and the display panel 3 or the attaching target surface5 a do not contact with each other after the completion of moving thedisplay panel 3, it is preferable to carry out such a step of pressingthe display panel 3. In addition, as described above, in a case wherethe weak adhesive layer 6 is formed using an adhesive agent thatdevelops adhesiveness by applying pressure, the display panel 3 and theattaching target surface 5 a can be brought into close contact with eachother via the weak adhesive layer 6 by carrying out such a step ofpressing the display panel 3.

FIG. 6D shows an example of a case in which the display panel 3 ispressed with a pressing member 101. The pressing member 101 may be movedfrom the vicinity of the first rod-like member 1 towards the first ends4 c of the two second rod-like members 2 a, 2 b (refer to FIG. 6B) whenthe display panel 3 is pressed towards the attaching target surface 5 a.That is, a position of the display panel 3 to be pressed at the time ofpressing the display panel 3 may be shifted from the vicinity of thefirst rod-like member 1 towards the first ends 4 c of the two secondrod-like members 2 a, 2 b. By pressing the display panel 3 in this way,it is possible to discharge the air, through the opening of theframe-shaped body 4 to the outside thereof, which may be air bubbles inthe interface between the weak adhesive layer 6 and the display panel 3or the attaching target surface 5 a. Consequently, it is possible toalmost surely bring the weak adhesive layer 6 into close contact withthe display panel 3 or the attaching target surface 5 a. The pressingmember 101 is not particularly limited as long as it is possible toapply a pressure to the display panel 3. In a case where the pressingmember 101 is moved, a member capable of rolling such as a roller ispreferable for the pressing member 101 from a viewpoint of reduction ofa stress applied to the display panel 3. Preferably, after the step ofpressing the display panel 3 as shown in FIG. 6D, the work for attachingthe display panel 3 by using the method for attaching display panelaccording to the present embodiment is completed.

In a case where the frame-shaped body 4 illustrated in FIG. 5A to FIG.5D described above is used, the plate-shaped member 43 may be providedon the first rod-like member 1 and the second rod-like members 2 a, 2 bafter the display panel 3 has been attached. That is, at first, thefirst rod-like member 1 and the two second rod-like members 2 a, 2 billustrated in FIG. 2A to FIG. 2C, FIG. 3A and FIG. 3B are bonded to theattaching target surface 5 a. Then, after the step of pressing thedisplay panel 3 described above has been completed, the plate-shapedmember 43 may be bonded to the first rod-like member 1 and the secondrod-like members 2 a, 2 b.

A method for manufacturing display apparatus of another embodimentaccording to the present invention comprises forming the display panel 3having a width to be supported between the two second rod-like members 2a, 2 b in addition to the steps comprised in the method for attachingdisplay panel of Embodiment 1 described referring to FIG. 6A to FIG. 6D.An example of a method for forming the display panel 3 will be describedreferring to FIG. 7 which shows, in an enlarged manner, an example of astructure of an organic EL display panel used as the display panel 3. Asshown in FIG. 7, the display panel 3 comprises a substrate 30 and aplurality of display elements 34 formed on the substrate 30. Examples ofthe substrate 30 include a resin film formed using a polyimide resin anda glass plate. A plurality of organic EL display elements (displayelements 34) are formed in a matrix form on the flexible substrate 30formed by, for example, a slot die coating technique using a polyimideresin or the like. Each display element 34 has: a TFT (thin filmtransistor) 35; a first electrode 36 connected to the TFT 35; an organiclayer 37 to emit light formed of an organic material vapor-deposited onthe first electrode 36; and a second electrode 38 formed on the organiclayer 37. Each display element 34 is separated from other displayelements 34 by a bank formed using insulation resin, SiO₂ or the like.The first electrode 36 and the bank 39 are formed on a flattening layer40 that covers the TFT 35.

The TFT 35 can be formed by forming a channel layer composed ofpolycrystalline silicon or the like, an insulation layer, and eachelectrode, which are formed through, for example, a step of forming afilm by sputtering or the like, steps of exposure and development forphotoresist, and a step of patterning by etching. Alternatively, atransparent amorphous oxide semiconductor such as an oxide of indium,gallium, and zinc may be used for the channel layer. The first electrode36 is formed by forming a film and patterning using a conductivematerial having light transmission property such as an ITO layer. Then,the bank 39 is formed by forming a resin layer and patterning the resinlayer, and within each division surrounded by the bank 39, the organiclayer 37 is formed using a vacuum vapor deposition technique using amask, or an inkjet technique or the like. Although the organic layer 37is shown as a single layer in FIG. 7, actually, a hole injection layer,a hole transport layer, a light emitting layer, an electron transportlayer, and an electron injection layer or the like are formed in orderby the vacuum vapor deposition technique or the like so that the organiclayer 37 having a multilayered structure is formed. Each layer of theorganic layer 37 can be formed using a known material. Then, the secondelectrode 38 is formed to be sufficiently thinner than a lightwavelength so as to have transparency by using a technique such asvacuum vaper deposition. The second electrode 38 is formed using, forexample, a metal with a small work function such as an Mg—Ag alloy layeror aluminum or an alkaline metal or an alkaline earth metal. Further, ona surface of the second electrode 38, a protection layer 41 made of, forexample, Si₃N₄ is formed. The barrier layer 33 (refer to FIG. 6C)described above may be formed as the protection layer 41. Thecross-sectional structure shown in FIG. 7 is provided as a mere example,and the structure of the organic EL display panel constituting thedisplay panel 3 and materials for each constituent element and formingmethod for the constituent element are not limited to the structures,the materials, and the forming method described herein.

It can be appreciated that in a case where the display panel 3 is theliquid crystal display panel (not shown), the display panel 3 includes:a first substrate formed using a very thin glass plate or the like; asecond substrate having flexibility, which is disposed to be spaced fromthe first substrate; and a liquid crystal layer between the first andsecond substrates. The display panel 3 is provided with: a TFT formed onthe first substrate; a pixel electrode connected to this TFT; and afirst alignment film formed on the pixel electrode. In addition, thedisplay panel 3 may be provided with: a color filter, a commonelectrode, and a second alignment film, all of which are provided inorder on the second substrate. The liquid crystal layer is composed of aliquid crystal material filled between the first and second alignmentfilms. A polarization film is provided on each of respective surfaces ofthe first substrate and the second substrate, which are opposite to thesurfaces facing the liquid crystal layer. In a case where a liquidcrystal display panel is formed as the display panel 3, each electrode,alignment films, polarization films, and liquid crystal layer whichconstitute the liquid crystal display panel can be formed by any methodincluding a well-known method. Therefore, a detailed description thereofis omitted.

A plurality of display panel 3 composed of the organic EL display panelor the liquid crystal display panel is preferably formed simultaneouslyby using a substrate (for example, substrate 30) having a size of whicha plurality of display panels 3 can be arrayed.

Further, after each constituent element of the display panel 3 has beenformed, the plurality of display panels 3 which was formed in a state ofbeing coupled on the plurality of substrates is divided into individualdisplay panels 3 each having a width to be supported between the twosecond rod-like members 2 a and 2 b (refer to FIG. 6B). For example, thedisplay panel 3 can be formed through such steps.

FIG. 8 shows an example of the display panel 3 attached to a vehiclewindshield by the method for attaching display panel according toEmbodiment 1. In the example of FIG. 8, the display panel 3 is attachedto the vehicle windshield having the attaching target surface 5 a as asurface facing an interior of the vehicle by using the method forattaching display panel of the present embodiment. That is, theframe-shaped body 4 composed of the first rod-like member 1 and the twosecond rod-like members 2 a, 2 b is bonded to the attaching targetsurface 5 a (the surface of the vehicle windshield facing the interiorof the vehicle), and the display panel 3 is held by the frame-shapedbody 4. In addition, the display panel 3 in the example of FIG. 8 is atransparent organic EL display panel formed using a light transmissivematerial, and in a right side region of the display panel 3, lightemission in pixel 31 (refer to FIG.

2A) is stopped. Thus, a front side scene, through the windshield,including such as a signal S1 and a variety of traffic signs S2 isvisible in the right side region of the display panel 3. Meanwhile, in aleft side region of the display panel 3, an image produced by anavigation system is displayed by driving the pixel 31. The displaypanel 3 may be capable of partially displaying an image on the displayscreen as in the example of FIG. 8 or not capable of generating such apartial display.

A vehicle windshield is often mounted on a vehicle so as to incline atop edge thereof to an interior of the vehicle. The operation ofattaching the display panel 3 to a surface of such windshield whichfaces the interior of the vehicle is carried out in a face-up state,therefore, it is very difficult to accurately position the display panel3 in a predetermined position in such a state. Further, in the operationin such a difficult situation, the display panel 3 may not be able to beattached in an accurate position at first try, and correction of theposition or retrial of the operation of the attaching may be required.Thus, there is a risk that the display panel 3 is broken through theadditional operations. However, by using the method for attachingdisplay panel according to the present embodiment, it is possible toattach the display panel 3 easily as well as accurately at thepredetermined position even on the vehicle windshield.

In the example of FIG. 8, the frame-shaped body 4 is bonded in thevicinity of an upper edge of the windshield in front of a driver seat,however, the frame-shaped body 4 can be attached in any position on thewindshield. The frame-shaped body 4 having a transverse width which isequivalent to a full width of the windshield may be bonded in thevicinity of the upper edge or a lower edge of the windshield throughouta vehicle width direction. In addition, a plurality of frame-shaped body4 may be bonded to the windshield, and a plurality of display panels 3may be attached.

Further, in the example of FIG. 8, the frame-shaped body 4 is bonded inan orientation in which the first rod-like member 1 is located at lowerside, in gravitational direction during normal use of the vehicle, thanthe first ends 4 c of the second rod-like members 2 a, 2 b. Therefore, adownward movement of the display panel 3 by a gravitational action canbe restricted by the first rod-like member 1. On the other hand, amovement of the display panel 3 outward of the frame-shaped body 4through the opening of the frame-shaped body 4 can be prevented by thegravitational action.

As shown in FIG. 8, it is preferable that at least one of the secondrod-like members 2 a, 2 b is positioned at a position along a pillar P1in the vicinity of the driver seat or a position along a pillar P2 inthe vicinity of a passenger seat. This is because if the second rod-likemembers 2 a, 2 b are positioned in this way, at least one of the secondrod-like members 2 a, 2 b is inconspicuous.

Furthermore, in the example of FIG. 8, the wiring board 9 extends to aspace between an upholstery of the ceiling part in the interior of thevehicle and a roof of the vehicle at the upper edge of the windshield.The wiring plate 9 is inserted into a connector 21 disposed between theupholstery of the ceiling part and the roof of the vehicle. Theconnector 21 may be coupled to a driver (not shown) to supply a drivesignal to the display panel 3. By way of such arrangement, it ispossible to reduce a length of the wiring board 9. Further, the displaypanel 3 can be accurately attached at the predetermined position byusing the method for attaching display panel 3 of the presentembodiment, therefore, any excessiveness or shortage of the length ofthe wiring board from the display panel 3 to the connector 21 hardlyoccurs. Therefore, it is possible to reduce exposure of the wiring board9 inside the interior of the vehicle.

In FIG. 9, there is shown additional steps to be carried out in order toobtain the configuration illustrated in FIG. 8 in a case where thedisplay panel 3 is attached to the vehicle windshield by using themethod for attaching display panel of the present embodiment. As shownin FIG. 9, the method for attaching display panel to the windshield byusing the method of the present embodiment may comprise the step ofconnecting the connector 21 that is disposed at the ceiling part in theinterior of the vehicle and the flexible wiring board 9 that isconnected to the display panel 3 to each other after the display panel 3has been moved to the predetermined position. Afterwards, an upholsterymaterial 24 to cover the connector 21 may be attached to the ceilingpart in the interior of the vehicle. In the example of FIG. 9, theconnector 21 is mounted on the substrate 22 on which a driver (notshown) to supply a drive signal to the display panel 3 has been mounted.The connector 21 is arranged at the predetermined position in a spaceprovided between a roof 23 and the upholstery material 24 at the ceilingpart in the interior of the vehicle. An upper end part of a surface(attaching target surface 5 a) of a windshield FG facing the interior ofthe vehicle is bonded, using the adhesive 26, on a surface of an endpart of the roof 23 facing the outside of the vehicle. Reference numeral25 designates a sound insulator which is disposed between the roof 23and the upholstery material 24.

Examples of the connector 21 include a connector such as a FPC-to-boardtype connector or a cable-to-board type connector, but the connector 21is not limited thereto. Also, in FIG. 9, the connector 21 provided witha lock lever 21a is illustrated, but the connector 21 may not always beprovided with the lock lever 21a, and may be of type to which FPC andcable are simply inserted. In addition, the connector 21 may not alwaysbe mounted on the substrate 22, and in that case, the connector 21 maybe of cable-to-cable type.

After the display panel 3 has been moved to the predetermined position,an opposite end to the display panel 3 in the wiring board 9 is led intothe ceiling part of the interior of the vehicle to which the upholsterymaterial 24 is not yet furnished, and is connected to the connector 21.Then, the upholstery material 24 is attached to the ceiling part. Theupholstery material 24 is formed using any material such as a syntheticresin, a fiber, leather or a metal. Means for attaching the upholsterymaterial 24 to the ceiling part is not limited particularly, and theupholstery material 24 can be attached using general attaching meanswhich is used to attach an upholstery material to an interior of thevehicle.

Embodiment 2

Next, a method for attaching display panel according to Embodiment 2will be described referring to FIG. 10A to FIG. 10C. In FIG. 10A to FIG.10C, similar constituent elements to those shown in FIG. 6A to FIG. 6Ddescribed above are referred with the same reference numerals as thoseused in FIG. 6A to FIG. 6D, and a duplicate description of theseconstituent elements are appropriately omitted. Also, in FIG. 10A toFIG. 10C, the frame-shaped body 4 shown in FIG. 2A to FIG. 2C describedabove is shown as an example, however, in Embodiment 2 any of theexamples shown in FIG. 3A, FIG. 3B, FIG. 4A and FIG.

5A to FIG. 5D may be prepared as the frame-shaped body 4. Further,modification may be applied to the frame-shaped body 4 whichappropriately includes the first rod-like member 1 and the secondrod-like members 2 a, 2 b, and such frame-shaped body 4 with themodification may be used.

The method for attaching display panel of Embodiment 2 is different fromthe method for attaching display panel of Embodiment 1 in that the firstrod-like member 1 is bonded in the vicinity of an outer edge 5 b on theattaching target surface 5 a along the outer edge 5 b of the object 5having a surface that is the attaching target surface 5 a. That is, asshown in FIG. 10A, the first rod-like member 1 is bonded to the edge ofthe attaching target surface 5 a along the outer edge 5 b of theattaching target surface 5 a. On the other hand, the first ends 4 c ofthe second rod-like member 2 a, 2 b and the opening of the frame-shapedbody 4 are positioned to be closer to the center part of the attachingtarget surface 5 a than the first rod-like member 1. It may bepreferable to position the first rod-like member 1 so as to be along theouter edge 5 b of the attaching target surface 5 a because the firstrod-like member 1 is made inconspicuous. It is further preferable that,as shown in FIG. 10A, either one of or both of the second rod-likemembers 2 a, 2 b are positioned so as to be along the outer edge of theattaching target surface 5 a because at least one of the second rod-likemembers 2 a, 2 b is made inconspicuous.

The first rod-like member 1 can be positioned so as to be along any partof the outer edge 5 b of the attaching target surface 5 a. That is, thefirst rod-like member 1 may be positioned along a part of the edge 5 bwhich is to be either an upper edge or a lower edge, assuming thatgravitational direction faces downward, during use of the display panel3 (refer to FIG. 10B). In addition, the first rod-like member 1 may bepositioned so as to be along a part, of the outer edge 5 b, which issubstantially parallel to the gravitational direction during use of thedisplay panel 3. For example, the frame-shaped body 4 may be bonded at aposition B1 or a position B2 indicated by the chain double-dashed linein FIG. 10A.

In Embodiment 2 as well, as shown in FIG. 10B, the display panel 3 isled into the frame-shaped body 4 from the first ends 4 c of the secondrod-like members 2 a, 2 b and moved towards the first rod-like member 1.In Embodiment 2, the display panel 3 is moved, to the first rod-likemember 1, with a fourth edge 3 d to which the flexible wiring board 9has been connected at the head. By positioning the fourth edge 3 dahead, it is possible to draw the wiring board 9 to the outside of theattaching target surface 5 a in a short route. Therefore, it is possibleto reduce the length of the wiring board 9 which has to reach a driver(not shown) disposed outside the attaching target surface 5 a. Further,the wiring board 9 can be made inconspicuous.

Then, as shown in FIG. 10C, preferably, the display panel 3 is moveduntil the display panel 3 abuts against the first rod-like member 1. Thewiring board 9 crosses over the first rod-like member 1 of theframe-shaped body 4, and is drawn outward of the frame-shaped body 4.Thus, the wiring board 9 can be supported by the first rod-like member 1during use of the display panel 3. Excessive vibration of the wiringboard 9 is restricted, and a stress applied to a bonding part betweenthe wiring board 9 and the display panel 3 can be reduced. For example,as described above, in a case where the method for attaching displaypanel of Embodiment 2 is used for the vehicle windshield, the stresswhich may occur owing to the vibration of the vehicle while running andmay be applied to the wiring board 9 and the bonding part between thewiring board 9 and the display panel 3 can be reduced.

In the method for attaching display panel of Embodiment 2 as well, afterthe display panel 3 has been moved to the predetermined position, thedisplay panel 3 may be pressed towards the attaching target surface 5 aby using a similar manner to the manner described referring to FIG. 6D.In addition, the method for manufacturing display apparatus describedabove may comprise the steps included in the method for attachingdisplay panel of Embodiment 2.

[Summary]

(1) A method for attaching display panel according to Embodiment 1 ofthe present invention is characterized by comprising: preparing aframe-shaped body comprising a first rod-like member and two secondrod-like members, the two second rod-like members being substantiallyparallel to each other and crossing the first rod-like member; bondingthe first rod-like member and the two second rod-like members to a givenplane surface or a given curved surface; and moving a display panelhaving a width to be supported between the two second rod-like membersfrom one of the ends of two second rod-like members towards the firstrod-like member along a first surface of the two second rod-like membersand a second surface of the two second rod-like members, the firstsurface and the second surface facing each other.

According to the configuration of (1), it is possible to easily attach adisplay panel at a proper position on a given plane surface or a givencurved surface and thereafter it is possible to easily detach thedisplay panel from the attaching target surface as required.

(2) In the method for attaching display panel of (1), moving a displaypanel towards the first rod-like member may comprise: moving the displaypanel with each of two opposite edges of the display panel beinginserted into concave portion provided on the first surface and thesecond surface of the second rod-like members.

According to the configuration of (2), movement of the display panel ina direction in which the display panel is separated from the surface onwhich the display panel has been attached can be prevented almostsurely.

(3) The method for attaching display panel of (1) or (2) may furthercomprise:

forming a weak adhesive layer on the plane surface or curved surface, oron a surface of the display panel, the surface being arranged to facethe plane surface or curved surface, by using an adhesive agent beforemoving the display panel from the one of the ends of two second rod-likemembers towards the first rod-like member; and pressing the displaypanel against the plane surface or curved surface after moving thedisplay panel to a predetermined position, so that the display panel andthe plane surface or curved surface closely contact with each other viathe weak adhesive layer.

According to the configuration of (3), the display panel and the givenplane surface or the given curved surface can be substantially securelybrought into close contact with each other and it is possible to easilydetach the display panel, as required, from the surface with which thedisplay panel has been brought into close contact.

(4) In the method for attaching display panel of (3), pressing thedisplay panel against the plane surface or curved surface may furthercomprise: shifting a position of the display panel to be pressed from avicinity of the first rod-like member towards the ends of two secondrod-like members.

According to the configuration of (4), it is possible to effectivelydischarge air, through an opening of the frame-shaped body to theoutside thereof, which may be air bubbles in an interface between theweak adhesive layer and the display panel or between the weak adhesivelayer and the given plane surface or curved surface.

(5) In the method for attaching display panel of (3) or (4), the weakadhesive layer may be formed using an adhesive agent to developadhesiveness by applying pressure.

According to the configuration of (5), when the display panel is movedtowards the first rod-like member, even in a case where the displaypanel and the weak adhesive layer come into contact with each other, or,even in a case where the given plane surface or curved surface and theweak adhesive layer come into contact with each other, it is possible tomove the display panel smoothly without any problem.

(6) In the method for attaching display panel of any one of (1) to (5),the first rod-like member may be bonded to the plane surface or curvedsurface at a position to be lower than the one of the ends of two secondrod-like members in a gravitational direction during use of the displaypanel.

According to the configuration of (6), movement of a display paneloutward of the frame-shaped body through an opening of the frame-shapedbody (between the ends of two second rod-like members) can be restrictedby gravity.

(7) In the method for attaching display panel of any one of (1) to (6),the first rod-like member may be bonded along an outer edge of an objectcomprising a surface to be the plane surface or curved surface in avicinity of the outer edge.

According to the configuration of (7), it is possible to bring the firstrod-like member into inconspicuous to a user of the display panel.

(8) The method for attaching display panel of any one of (1) to (7), mayfurther comprise: drawing a wiring board outward of the frame-shapedbody, wherein the display panel is moved towards the first rod-likemember with an edge to which the flexible wiring board has beenconnected at the head; and the wiring board is drawn outward of theframe-shaped body over the first rod-shaped member of the frame-shapedbody.

According to the configuration of (8), it is possible to support thewiring board with the first rod-like member. For example, excessivevibration of the wiring board is restricted, and a stress applied to abonding part between the wiring board and the display panel can bereduced.

(9) In the method for attaching display panel of any one of (1) to (8),the first rod-like member may comprise a part curving so as to be convextowards an opposite direction to a direction facing the ends of secondrod-like members.

According to the configuration of (9), it is possible to appropriatelyattach the display panel having a curved outer edge onto the given planesurface or the given curved surface.

(10) A method for attaching display panel to vehicle windshieldcomprising t the plane surface or curved surface by using the method forattaching display panel of any one of (1) to (9), may comprise:connecting a connector disposed on a ceiling part in an interior of avehicle and a flexible wiring board connected to the display panel toeach other after moving the display panel to a predetermined position;and attaching an upholstery material to cover the connector to theceiling part.

According to the configuration of (10), it is possible to connect thedisplay panel and an external device connected to the connector to eachother with the short wiring board, and it is possible to preventexposure of the connector and the external device or the like to aninterior of the vehicle.

(11) A method for manufacturing display apparatus according to anotherembodiment of the present invention is characterized by comprising:preparing a frame-shaped body comprising a first rod-like member and twosecond rod-like members, the two second rod-like members being parallelto each other and crossing the first rod-like member; bonding the firstrod-like member and the two second rod-like members to a given planesurface or a given curved surface; forming a display panel having awidth to be supported between the two second rod-like members; andattaching the display panel to the given plane surface or given curvedsurface, wherein attaching the display panel to the given plane surfaceor given curved surface comprising: moving the display panel from one ofthe ends of two second rod-like members towards the first rod-likemember along a first surface of the two second rod-like members and asecond surface of the two second rod-like members, the first surface andthe second surface facing each other.

According to the configuration of (11), it is possible to obtain adisplay apparatus in which the display panel can be easily detached fromthe given plane surface or the given curved surface on which the displaypanel has been attached.

DESCRIPTION OF REFERENCE NUMERALS

-   1 First rod-like member-   2 a, 2 b Second rod-like member-   3 Display panel-   3 a First edge-   3 b Second edge-   3 d Fourth edge-   4 Frame-shaped body-   4 a First surface-   4 b Second surface-   4 c First end-   4 e, 4 e 1, 4 e 2, 4 e 3 Concave portion-   5 a Attaching target surface (surface)-   5 b Outer edge-   6 Weak adhesive layer-   9 Wiring board-   10 Display apparatus-   21 Connector-   24 Upholstery material

What is claimed is:
 1. A method for attaching a display panel to avehicle windshield comprising: preparing a frame-shaped body comprisinga first rod-like member and two second rod-like members, the two secondrod-like members being substantially parallel to each other and crossingthe first rod-like member; bonding the first rod-like member and the twosecond rod-like members to a surface of the vehicle windshield to beoriented to an interior of a vehicle; and moving the display panelhaving a width to be supported between the two second rod-like membersfrom one of ends of the two second rod-like members towards the firstrod-like member along a first surface of the two second rod-like membersand a second surface of the two second rod-like members, the firstsurface and the second surface facing each other, wherein theframe-shaped body to be prepared further comprises a plate-shaped memberformed using a light transmissive material and coupled with the firstrod-like member and the two second rod-like members, and the firstrod-like member and the two second rod-like members are bonded to thesurface of the vehicle windshield while orienting a surface of each ofthe first rod-like member and the two second rod-like members to thesurface of the vehicle windshield, wherein the surface of each of thefirst rod-like member and the second rod-like members is a surfaceopposite to a surface being coupled with the plate-shaped member.
 2. Themethod for attaching a display panel to a vehicle windshield accordingto claim 1, wherein the first rod-like member and the two secondrod-like members are bonded to the surface having a curved surfaceshape.
 3. The method for attaching a display panel to a vehiclewindshield according to claim 1, wherein as the frame-shaped body, aframe-shaped body being formed using a light transmissive material isprepared, and the first rod-like member and the two second rod-likemembers are bonded to the surface, using a light transmissive adhesive.4. A method for attaching a display panel to a vehicle windshieldcomprising: preparing a frame-shaped body comprising a first rod-likemember and two second rod-like members, the two second rod-like membersbeing substantially parallel to each other and crossing the firstrod-like member; bonding the first rod-like member and the two secondrod-like members to a surface of the vehicle windshield to be orientedto an interior of a vehicle; and moving the display panel having a widthto be supported between the two second rod-like members from one of endsof the two second rod-like members towards the first rod-like memberalong a first surface of the two second rod-like members and a secondsurface of the two second rod-like members, the first surface and thesecond surface facing each other, wherein as the frame-shaped body, aframe-shaped body in which both ends of the first rod-like member arecoupled to the two second rod-like members respectively at asubstantially intermediate position in a longitudinal direction of eachof the two second rod-like members is prepared, and the display panel ismoved towards the first rod-like member from first ends of the twosecond rod-like members or from second ends of the two second rod-likemembers, the second ends being opposite the first ends.
 5. The methodfor attaching a display panel to a vehicle windshield according to claim4, wherein the first rod-like member and the two second rod-like membersare bonded to the surface having a curved surface shape.
 6. The methodfor attaching a display panel to a vehicle windshield according to claim4, wherein as the frame-shaped body, a frame-shaped body being formedusing a light transmissive material is prepared, and the first rod-likemember and the two second rod-like members are bonded to the surface,using a light transmissive adhesive.
 7. A method for attaching a displaypanel to a vehicle windshield, the display panel comprising a pluralityof pixels arranged in a matrix form, the method comprising: preparing aframe-shaped body comprising a first rod-like member and two secondrod-like members, the two second rod-like members being substantiallyparallel to each other and crossing the first rod-like member; bondingthe first rod-like member and the two second rod-like members to asurface of the vehicle windshield to be oriented to an interior of avehicle; and moving the display panel having a width to be supportedbetween the two second rod-like members from one of ends of the twosecond rod-like members towards the first rod-like member along a firstsurface of the two second rod-like members and a second surface of thetwo second rod-like members, the first surface and the second surfacefacing each other, wherein an edge of the display panel is inserted intoa concave portion composed of the surface and steps, the steps beingformed on the first surface and the second surface.
 8. The method forattaching a display panel to a vehicle windshield according to claim 7,wherein the first rod-like member and the two second rod-like membersare bonded to the surface having a curved surface shape.
 9. The methodfor attaching a display panel to a vehicle windshield according to claim7, wherein as the frame-shaped body, a frame-shaped body being formedusing a light transmissive material is prepared, and the first rod-likemember and the two second rod-like members are bonded to the surface,using a light transmissive adhesive.